hey, i didn't know if they were compatible or not either, Ive learned something valuable about ram today, and i hand it to the guy who had started the smart question....that guy is right, im not a alpha omega of pc's either, that's why i surf these sites, i learn a lot from people who don't mind giving a straight answer about a simple question from another who may know, but there is people like this DB who would rather waste their typing skills on wise ass responses,............i can tell this person may have knowledge on pc's but has the maturity level of a adolescent, that's definitely no way to earn any kind of respect from someone you are handing over some knowledge to.......